Compilare: user.cpp: In function ‘void gaseste(int, int)’: user.cpp:50:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0;k<o[i].size() && ok;k++) ^ user.cpp: In function ‘int main()’: user.cpp:100:13: warning: unused variable ‘q’ [-Wunused-variable] int q=ans[0]; ^ user.cpp:60:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("domino.in","r",stdin); ^ user.cpp:61:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("domino.out","w",stdout); ^ user.cpp:62:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&m); ^ user.cpp:65:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^